diff --git a/src/Core/Logger.php b/src/Core/Logger.php
index a87be78633..a050f7e245 100644
--- a/src/Core/Logger.php
+++ b/src/Core/Logger.php
@@ -8,7 +8,6 @@
 namespace Friendica\Core;
 
 use Friendica\DI;
-use Friendica\Core\Logger\Type\WorkerLogger;
 use Psr\Log\LoggerInterface;
 
 /**
@@ -18,10 +17,7 @@ use Psr\Log\LoggerInterface;
  */
 class Logger
 {
-	/**
-	 * @return LoggerInterface|WorkerLogger
-	 */
-	private static function getInstance()
+	private static function getInstance(): LoggerInterface
 	{
 		return DI::logger();
 	}
@@ -38,6 +34,8 @@ class Logger
 	 */
 	public static function emergency(string $message, array $context = [])
 	{
+		trigger_error('Class `' . __CLASS__ . '` is deprecated since 2025.02 and will be removed after 5 months, use constructor injection or `DI::logger()` instead.', E_USER_DEPRECATED);
+
 		self::getInstance()->emergency($message, $context);
 	}
 
@@ -55,6 +53,8 @@ class Logger
 	 */
 	public static function alert(string $message, array $context = [])
 	{
+		trigger_error('Class `' . __CLASS__ . '` is deprecated since 2025.02 and will be removed after 5 months, use constructor injection or `DI::logger()` instead.', E_USER_DEPRECATED);
+
 		self::getInstance()->alert($message, $context);
 	}
 
@@ -71,6 +71,8 @@ class Logger
 	 */
 	public static function critical(string $message, array $context = [])
 	{
+		trigger_error('Class `' . __CLASS__ . '` is deprecated since 2025.02 and will be removed after 5 months, use constructor injection or `DI::logger()` instead.', E_USER_DEPRECATED);
+
 		self::getInstance()->critical($message, $context);
 	}
 
@@ -86,6 +88,8 @@ class Logger
 	 */
 	public static function error(string $message, array $context = [])
 	{
+		trigger_error('Class `' . __CLASS__ . '` is deprecated since 2025.02 and will be removed after 5 months, use constructor injection or `DI::logger()` instead.', E_USER_DEPRECATED);
+
 		self::getInstance()->error($message, $context);
 	}
 
@@ -103,6 +107,8 @@ class Logger
 	 */
 	public static function warning(string $message, array $context = [])
 	{
+		trigger_error('Class `' . __CLASS__ . '` is deprecated since 2025.02 and will be removed after 5 months, use constructor injection or `DI::logger()` instead.', E_USER_DEPRECATED);
+
 		self::getInstance()->warning($message, $context);
 	}
 
@@ -117,6 +123,8 @@ class Logger
 	 */
 	public static function notice(string $message, array $context = [])
 	{
+		trigger_error('Class `' . __CLASS__ . '` is deprecated since 2025.02 and will be removed after 5 months, use constructor injection or `DI::logger()` instead.', E_USER_DEPRECATED);
+
 		self::getInstance()->notice($message, $context);
 	}
 
@@ -134,6 +142,8 @@ class Logger
 	 */
 	public static function info(string $message, array $context = [])
 	{
+		trigger_error('Class `' . __CLASS__ . '` is deprecated since 2025.02 and will be removed after 5 months, use constructor injection or `DI::logger()` instead.', E_USER_DEPRECATED);
+
 		self::getInstance()->info($message, $context);
 	}
 
@@ -148,6 +158,8 @@ class Logger
 	 */
 	public static function debug(string $message, array $context = [])
 	{
+		trigger_error('Class `' . __CLASS__ . '` is deprecated since 2025.02 and will be removed after 5 months, use constructor injection or `DI::logger()` instead.', E_USER_DEPRECATED);
+
 		self::getInstance()->debug($message, $context);
 	}
 }